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Vigorous exercise 'cuts chance of flu' by around 10%

Running, fast cycling, rugby or other vigorous exercise cuts the chance of catching flu by around 10%, according to research from the London School of Hygiene and Tropical Medicine.

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'77% of flu infections' had no symptoms, say experts

Over three quarters of flu infections contracted last year did not have any symptoms, researchers found.

Most of the infections (77%) didn't have any symptoms despite one in five people contracting either seasonal flu and the 2009 H1N1 influenza pandemic.

  • Researchers found that on average, 18% of people who had not received a flu jab were infected with flu each season.
  • And only 17% of those infected felt ill enough to visit their GP.
  • Over the winter flu season, 4.7% of people were believed to have flu compared to 6% the previous year.
  • Some 5% of children were reported to have flu, compared to almost 8% the previous year.

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